Logo

Programming-Idioms

# 352 Parallelize 3 computations
Execute the functions f1, f2, f3 concurrently, and assign their respective return values to a1, a2, a3.
New implementation

Be concise.

Be useful.

All contributions dictatorially edited by webmasters to match personal tastes.

Please do not paste any copyright violating material.

Please try to avoid dependencies to third-party libraries and frameworks.

Other implementations 
import "sync"
var wg sync.WaitGroup
wg.Add(3)
go func() {
	a1 = f1()
	wg.Done()
}()
go func() {
	a2 = f2()
	wg.Done()
}()
go func() {
	a3 = f3()
	wg.Done()
}()
wg.Wait()
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
List<Future<T>> a;
try (ExecutorService executorService = Executors.newFixedThreadPool(3)) {
    a = executorService.invokeAll(List.of(f1, f2, f3));
}

T a1 = a.get(0).get();
T a2 = a.get(1).get();
T a3 = a.get(2).get();

Preview